Web-press.



H. A. W. WOOD.

WEB PRESS.

APPLIGA'HON FILED APR. 26. 1915. RENEWED JULY 5. 1917.

Patented Aug. 28, 1917.

.IINITD %TATE% ATENT ll ll lffll di HENRY A. WISE WOOD, OF NEW YORK, Y.,ASSIGNOR T0 WOOD NEWSPAPER 1VAGHIN- ERY CORPORATION, OF NEW YORK, N. Y.,A CORPORATION OF VIRGINIA.

WEB-PRESS.

Application filed. April 26, 1915, Seria1 No. 23,837. Renewed July 5.1917.

T 0 all whom it may concern:

Be it known that I, HENRY A. WVIsE 0013, a citizen of the United States,residing at New York, in the county of New York and State of New York,have invented a new and useful lVeoPress, of which the following is aspecification.

This invention relates to presses particularly double width newspaperpresses, and the principal object thereof is to provide means wherebythe staggering of the plates on the plate cylinder in such a press willbe prevented from causing any unequal strains in the web. These renderthe web taut at one side and loose at the other which ordinarily causesfrequent fractures of the web.

Reference is to be had to the accompanying drawings in which- Figure lis a side view of a double width web press constructed in accordancewith this invention; and

Fig. 2 is a plan of the same.

In all double width newspaper presses having four plates abreast,running crosswise of the press, a full width web is used. After such aweb has been printed it is then slit in half, and if its two halves areto be associated they are brought together either before or after theoperation of folding. A full width web thus slit would produce an eightpage paper. Sometimes, however, when six pages need to be run on apress, the web will be three pages wide instead of four, one of whichpages is slit off from the other two and is thereafter associated withthem to make up a six page product.

On four-page-wide presses it is the rule to have the two plates on oneend of a cylinder and the two plates on the other end so difierently setwith respect to their margins across the press that when the impressioncylinder is passing over one margin it is supported by the plates at theopposite end of the cylinder, and when it is passing over the margin atthe opposite end of the cylinder it will be supported by the plates atthe near end. This is referred to technically as staggering plates. Thishas been found necessary as cylinders of such great length are apt tospring down into a margin if it runs throughout their full length, andbound up when the cylinder comes in contact with the leading edges ofthe next plates to be Specification of Letters Patent.

Patented Au 28, 1917.

Serial No. 178,785.

met. It is obvious that the staggering of plates obviates this trouble.

The staggering of the plates, however, is deleterious to the operationof the machine at high speed, because staggered plates re lease theirhold on the web, first on one side and then on the other, and notsimultaneously full across the width of the web. Thus the release of theweb is staggered, as are the plates, which staggered release makes theweb both alternately taut and loose at each sidetaut at one side when itis loose at the other, and vice versa. The fact that the differing andcontrary strains are set up in the same web causes frequent fractures ofthe web, particularly at speed.

Now in order to avoid this, according to this invention, I slit the webbefore it goes to the printing cylinders, and thus, while using a singleweb roll, I am printing on a. plurality of webs, each independent of theother. In this way neither web is subjected to a staggered effect, butthroughout its full width receives uniform tension, notwithstanding thefact that I have retained the advantage of staggering the platesthemselves.

Ordinarily the two webs may be run side by side through the press as ifthey were one. This, with. good paper and careful pressmanship, ispracticable, but with poor paper and pressmanship these independent websmay occasionally wander, when the edge of one may mount on top of theedge of the other and give trouble.

To prevent this I use two pathways so that from the moment the web isslit into two, each of the two has a pathway of its own except whilepassing through the printing cylinders. In this way the wandering of thewebs, which usually results between the printing cylinders and thefolder, cannot cause them to interfere with each other.

Referring to the drawings in detail, A and B are the two printingcouples and C and D their respective inking apparatuses. Four plates Pare shown staggered on each plate cylinder. The web is fed into themachine from paper rolls 10 as usual, and through feeding roller 11 withits feed belts 12. As the web passes over the feed roller 11 it is shownas being slit by means of a slitter 13 driven from the roller 11 throughgears 14land 15. Of course the slitting operation can be performed atsome other point. From this point the slit parts of web are guided tothe first printing couple independently of each other and preferably areseparate as shown, one part bending over a roller 16 and the other overa roller 17. These rollers are of full width and are shown as out ofregistration with each other.

But the webs enter the printing couple A side by side. As they leave theprinting couple B they are again separated, one part passing overrollers 18, 19, 20, 21 and 22 into the folder E and the other overrollers 23, 24. and 22 into the folder E. 01 course the usual turningbars may be employed, or the two webs treated in any other manner, as ifthey had been individuals from the start.

By this construction it is possible to utilize staggered plate cylindersand at the same time allow the two parts of the web to adjust themselvesto any strain or slackness every time the margin openings of theprinting cylinders pass each other.

Although I have illustrated and described only a single embodiment ofthe invention, I am aware of the fact that many modifications can bemade therein by any person skilled in the art without departing from thescope of the invention as expressed in the claims. Therefore, I do notwish to be limited to the details of construction herein shown anddescribed, but what I do claim 1s:

1. In a. printing press, the combination with the printing coupleshaving a plurality of sets of plates located in staggered relationship,of means for slitting the web before it passes to the printing couples,and means for conducting the parts of the web through the pressindependently of each other.

2. In a printing press, the combination with a printing couple having aplurality of sets of plates thereon located in staggered relationship,of means for slitting the web before it passes to the printing couple,and means for conducting the parts of the web through the press indifferent paths independent of each other except while pass ing throughthe printing couples.

8. In a newspaper printing press, the

combination with a printing couple having ship on the plate cylinderthereof, with means for slitting the web, and means for conducting bothhalves of the web to the printing couple in paths located in differentplanes.

5. In a double width newspaper printing press, the combination of aprinting couple having plates located in staggered relationship on theplate cylinder thereof, with means for slitting the web, and means forconducting both halves of the web from the printing couple in pathslocated in different planes.

6. In a double width newspaper printing press, the combination of aprinting couple having plates located in staggered relationship on theplate cylinder thereof, with means for slitting the web, means for conducting both halves of the web to the printing couple in paths locatedin different planes, and bringing them into the same plane while theypass through the printing couples, and means for conducting the halfwebs from the printing couples in paths located in different planes.

In testimony whereof I have hereunto set my hand, in the presence of asubscribing witness.

HENRY A. WISE WOOD.

l/Vitness:

BLODWEN W. J ONES.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. G.

